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Equibles

CITADEL ADVISORS LLC

Position in CRBU — Caribou Biosciences, Inc.

CIK 1423053 MIAMI, FL
Back to CRBU Full portfolio

Position in CRBU

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$302,161
-$517,370 QoQ
Shares Held
159,033
-69.1% QoQ
Ownership
0.160%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#37
of 137 holders
Holding Since
Dec 2021
18 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in CRBU Over Time

Shares Held

Position Value (USD)

Derivatives in CRBU

reported options exposure · as of Mar 31, 2026
CallValue
$126,350
CallShares
66,500
PutValue
$137,560
PutShares
72,400

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Mar 31, 2026

CITADEL ADVISORS LLC holds $5,780,363,972 across 373 Biotechnology names. CRBU ranks #285 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 INSM
INSMED Inc
 2,182,571 $356,894,009
2 ONC
BeOne Medicines Ltd.
 1,032,298 $306,561,536
3 BMRN
Biomarin Pharmaceutical Inc
 4,512,634 $254,918,694
4 JAZZ
Jazz Pharmaceuticals plc
 1,259,444 $238,097,887
5 MDGL
Madrigal Pharmaceuticals, Inc.
 453,843 $237,573,195
6 BBIO
BridgeBio Pharma, Inc.
 3,173,940 $235,696,783
7 TERN
Terns Pharmaceuticals, Inc.
 3,218,810 $169,695,662
8 PTGX
Protagonist Therapeutics, Inc
 1,551,900 $163,570,260

All Filings in CRBU

Export CSV
48 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $126,350 66,500
2026-03-31 $137,560 72,400
2026-03-31 $302,161 159,033
2025-12-31 $109,392 68,800
2025-12-31 $48,495 30,500
2025-12-31 $819,531 515,429
2025-09-30 $47,299 20,300
2025-09-30 $171,721 73,700
2025-09-30 $617,735 265,123
2025-06-30 $302,675 240,219
2025-06-30 $49,014 38,900
2025-06-30 $13,482 10,700
2025-03-31 $15,612 17,100
2025-03-31 $26,294 28,800
2024-12-31 $107,166 67,400
2024-12-31 $10,812 6,800
2024-09-30 $83,888 42,800
2024-09-30 $126,337 64,458
2024-09-30 $138,572 70,700
2024-06-30 $102,483 62,490
2024-06-30 $115,456 70,400
2024-06-30 $29,520 18,000
2024-03-31 $115,136 22,400
2024-03-31 $2,708,337 526,914
2024-03-31 $105,370 20,500
2023-12-31 $148,407 25,900
2023-12-31 $13,752 2,400
2023-09-30 $14,287 2,989
2023-09-30 $44,454 9,300
2023-09-30 $107,550 22,500
2023-06-30 $42,925 10,100
2023-06-30 $87,975 20,700
2023-06-30 $9,014 2,121
2023-03-31 $1,501,933 282,850
2023-03-31 $101,421 19,100
2023-03-31 $31,860 6,000
2022-12-31 $237,980 37,895
2022-12-31 $42,704 6,800
2022-12-31 $101,108 16,100
2022-09-30 $809,185 76,700
2022-09-30 $294,672 27,931
2022-06-30 $358,244 65,975
2022-06-30 $643,455 118,500
2022-03-31 $111,078 12,100
2022-03-31 $3,281,858 357,501
2022-03-31 $350,676 38,200
2021-12-31 $2,280,249 151,110
2021-12-31 $380,268 25,200

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